Charles Darwin is widely known for his theory of evolution by natural selection. He developed this theory after years of research and observation during his voyage on the HMS Beagle. Darwin’s observations of the natural world led him to conclude that species change over time and that this change is driven by natural selection.

Darwin’s theory of natural selection is based on the idea that organisms that are better adapted to their environment are more likely to survive and reproduce. This means that over time, the traits that are advantageous for survival become more common in a population, while traits that are not advantageous become less common.

Darwin’s discovery of natural selection was a major breakthrough in the field of biology and had a profound impact on our understanding of the natural world. His work continues to be studied and celebrated today, and his legacy as one of the greatest scientists of all time is secure.